3-52 Phaser 6128MFP Service Manual
Error Messages and Codes
14 Check KSNR Registration Clutch
harness continuity.
Disconnect P/J26 from the MCU
Board and P/J262 from the
Registration Clutch.
Is the harness damaged?
Repair or
replace the
harness
(PL10.8.9).
Go to step 15.
15 Check for +24 V at J26 of the MCU
Board.
Is there +24 V between ground <=>
J26-4 on the MCU Board when the
Interlock Switch is closed?
Go to step 16. Replace the
MCU Board
(page 8-57).
16 Check Registration Clutch resistance.
Disconnect P/J262 from the Feed
Solenoid
Is the resistance across J262-1 and
J262-2 about 280 Ohms?
Replace the
MCU Board
(page 8-57).
Replace the
Registration
Clutch
(page 8-35).
17 Check connectors P/J21 and P/J211
between the MCU Board and Main
Motor Assembly.
Are the connectors secure?
Go to step 18 Reconnect the
connectors.
18 Check the Main Drive harness
continuity. Disconnect P/J21 from
the MCU Board and P/J211 from the
Main Drive to check continuity.
Is the harness damaged?
Repair or
replace the
harness
(PL10.8.7).
Go to step 19.
19 Check for +24 V at J21 on the MCU
Board.
Is +24 V available at J21-2 and J21-
4 when the Interlock Switch is
closed?
Replace the
Main Drive
Assembly
(page 8-58).
Replace the
MCU Board
(page 8-57).
Troubleshooting Procedure Table (continued)
Step Actions and Questions Yes No
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